I also bought a Canadian registered vessel.
Other than the normal paperwork I had to complete 2 additional steps. The first was to "import" the boat into the
USA and pay duty on it. My boat had been in
Florida for years as a foreign vessel, and this still had to be done. I believe I paid 2% duty in 2005.
The other step was to send the Canadian
government a request to 'undocument' the boat. My
broker assisted with these tasks.
Both these steps were necessary for
Florida registration.